Drone Positioning
Very precise drone positioning in the centimeter range is fundamental for many future applications (indoor architecture assessment or accurate quantitative short range surveying of building facades and other architectural structures). However the accuracy of GPS is not high enough for such applications. Differential GPS improves the positioning but does not work indoors, in forests or in narrow streets with high buildings.
Possible options may be: Laser scanning and guidance, optical positioning with markers, ultra- wideband (UWB).